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  2. Roaming SIM - Wikipedia

    en.wikipedia.org/wiki/Roaming_SIM

    Roaming SIMs currently have two main applications, the least cost call routing for roaming mobile calls and machine to machine. Using a normal network locked SIM , travelers can use their own roaming enabled mobile phone in any country that has a roaming agreement with their home network, or for global networks like Vodafone , with another ...

  3. Roaming - Wikipedia

    en.wikipedia.org/wiki/Roaming

    In more technical terms, roaming refers to the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network. For example: should a ...

  4. List of mobile virtual network operators in the United States ...

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  5. European Union roaming regulations - Wikipedia

    en.wikipedia.org/wiki/European_Union_roaming...

    In October 2005, the European Commission launched a consumer website on roaming tariffs in order to highlight the issue, which included €12 for a 4-minute call. In 2006, when high roaming charge rates persisted the Commission proposed to intervene in the market by setting maximum rates at which mobile network operators could charge their ...

  6. List of mobile network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_network...

    The top five wireless providers operate nationwide wireless networks which cover most of the population in the United States, while smaller carriers provide native network coverage across selected regions of the United States while supplementing nationwide coverage through roaming agreements with other carriers.

  7. Termination rates - Wikipedia

    en.wikipedia.org/wiki/Termination_rates

    Termination rates in m:tel fixed telecommunication network is 2.81ct/min. [28] Fixed-line termination rates in Spain are currently from 0.56ct/min to 0.65ct/min depending on interconnect level, with a volume discount of maximum 20%. [32] Mobile termination rates in Spain were historically 4.98ct/min for Yoigo and 4.00ct/min for other operators ...

  8. GSM services - Wikipedia

    en.wikipedia.org/wiki/GSM_services

    Barring of Outgoing Calls. Barring of Incoming Calls. Advice of Charge (AoC). This GSM service estimates the call cost for display on the user's mobile phone. [1] This helps users by preventing bill shock [2] and reduces the load on the mobile network operator's customer service department. However, in practice, this GSM service is rarely used ...

  9. GSM frequency bands - Wikipedia

    en.wikipedia.org/wiki/GSM_frequency_bands

    Today, most telephones support multiple bands as used in different countries to facilitate roaming. These are typically referred to as multi-band phones. Dual-band phones can cover GSM networks in pairs such as 900 and 1800 MHz frequencies (Europe, Asia, Australia and Brazil) or 850 and 1900 (North America and Brazil).

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